package com.itheima.aop;

import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;

@Slf4j
//@Component
//@Aspect//AOP类
public class TimeAspect {
    @Pointcut("@annotation (com.itheima.aop.MyLog)")
    private void pt(){}//private只能在当前类使用
    @Around("pt()")
    public Object recordTime(ProceedingJoinPoint joinPoint) throws Throwable {
        //1.记录开始时间
        long begin = System.currentTimeMillis();
        //2.调用原始方法
        Object result = joinPoint.proceed();
        //3.记录结束时间，计算方法执行耗时
        long end = System.currentTimeMillis();
        log.info(joinPoint.getSignature()+"方法执行耗时：{}ms",end-begin);
        return result;
    }
}
